Activity map — real sighting points on an OpenStreetMap basemap © OpenStreetMap contributors
Au'au Channel

Lesser – Residency

10th sighting in Au'au Channel
Fluke of Lesser
Lesser Confirmed in the catalog @6609
Feb 12 – Mar 16, 2023 · Au'au Channel

Au'au Channel · Feb – Mar 2023

96 m
Deepest dive
3:27
Longest dive
72
Dives
Sightings
4
Days between first and last sighting
32

Dive stats modelled within real depth limits — not measured

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SightingSeafloorSea tempDeepest dive (modelled)
Feb 12, 2023109 m—96 m
Feb 13, 202324 m—19 m
Feb 13, 202316 m—15 m
Mar 16, 202348 m—38 m

Seafloor and sea temperature measured · ✳ dives modelled

Activity map — real sighting points on an OpenStreetMap basemap © OpenStreetMap contributors

Deepest dive against the seafloor, per sighting

Seafloor · measured Deepest dive · modelled
Feb 12, 2023 — seafloor 109 m (measured), deepest dive 96 m (modelled)Feb 12Feb 13, 2023 — seafloor 24 m (measured), deepest dive 19 m (modelled)Feb 13Feb 13, 2023 — seafloor 16 m (measured), deepest dive 15 m (modelled)Feb 13Mar 16, 2023 — seafloor 48 m (measured), deepest dive 38 m (modelled)Mar 16

Depth runs down from the surface. The modelled dive never passes the measured seafloor at that sighting.

Dives

96 m
Deepest dive
3:27
Longest dive
72
Dives
17 m
Avg dive depth
4
Sightings
32
Days first → last

Dive metrics are modelled within real depth limits — not measured

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Dive profile

modelled
05010096 mstartdive sequence (illustrative)

Depth shaped by the seafloor limit here (109 m) and the published dive-behaviour distribution. Modelled, not measured.

Deep Effort Score

Deep

Depth, duration and recovery resolved into a single number for this session.

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Place

Where this happened · Feb 12, 2023

measured
Seafloor depth
109 m
Sea-surface temperature
—
Distance from shore
5.0 km

Across the residency · 4 sightings

measured
Seafloor depth
16 m – 109 m
Sea-surface temperature
—
Distance from shore
4.0 km – 5.0 km

Sources: GEBCO seafloor grid · PacIOOS coastline distance

Activity map — real sighting points on an OpenStreetMap basemap © OpenStreetMap contributors

Source records

This activity is assembled from 4 catalogued encounters on Happywhale.

Sighting records from Happywhale, published as occurrence data via GBIF. Individual records are licensed CC0 1.0, CC BY 4.0 or CC BY-NC 4.0, depending on the contributor.

The photographs and fluke identifications behind every sighting are the work of the contributing observers — the citizen scientists, naturalists and operators who logged them, each named in the underlying GBIF occurrence record. Every activity links out to its source encounters on Happywhale. Basemaps © OpenStreetMap contributors (ODbL).

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Breach is an independent project. It is not affiliated with, nor endorsed by, Happywhale or GBIF.